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Addition to existing structure builders in San Bruno

Avatar for Unique Home Design & Remodeling
Unique Home Design & Remodeling
303 Twin Dolphin Drive, 6th Floor
4.83(
33
)
Approved Pro
Unique Home Design & Remodeling
303 Twin Dolphin Drive, 6th Floor
4.83(
33
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
30 local quotes requested

Unique Home Design & Remodeling is a leader in providing value-added construction services to our customers by creating a successful partnership throughout the construction process. Our pledge is to establish lasting relationships with our customers by exceeding their expectations and gaining their trust through exceptional performance by every member on our construction team.

"Deeply Disappointed ? Poor Execution, Lack of Communication, and Mismanagement I hired Unique Home Design & Remodel around August/September for a major home renovation project?an ~800 sqft addition and kitchen remodel. Unfortunately, the experience has been nothing short of frustrating and disappointing. From the very beginning, it was clear that Unique overpromises and severely underdelivers. The project manager, Tal Barun, and the subcontractor, Rafael, failed to maintain even the most basic level of professionalism. Once the work began, we heard nothing from Unique unless it was about collecting checks. No weekly updates, no clear plans, and a lot of confusion. Communication was abysmal?we had to chase them down for responses that came days later, if at all. The craftsmanship? Poor at best. The subcontractor appeared completely unprepared and unequipped to handle a project of this size. We were essentially left to deal with Rafael directly, which made things even worse. Foundation"

Kartik M on April 2025

Unique Home Design & Remodeling is a leader in providing value-added construction services to our customers by creating a successful partnership throughout the construction process. Our pledge is to establish lasting relationships with our customers by exceeding their expectations and gaining their trust through exceptional performance by every member on our construction team.

"Deeply Disappointed ? Poor Execution, Lack of Communication, and Mismanagement I hired Unique Home Design & Remodel around August/September for a major home renovation project?an ~800 sqft addition and kitchen remodel. Unfortunately, the experience has been nothing short of frustrating and disappointing. From the very beginning, it was clear that Unique overpromises and severely underdelivers. The project manager, Tal Barun, and the subcontractor, Rafael, failed to maintain even the most basic level of professionalism. Once the work began, we heard nothing from Unique unless it was about collecting checks. No weekly updates, no clear plans, and a lot of confusion. Communication was abysmal?we had to chase them down for responses that came days later, if at all. The craftsmanship? Poor at best. The subcontractor appeared completely unprepared and unequipped to handle a project of this size. We were essentially left to deal with Rafael directly, which made things even worse. Foundation"

Kartik M on April 2025


Avatar for Royalty Builders, Inc.
Royalty Builders, Inc.
228 Hamilton Ave 3rd Floor
5.00(
14
)
Approved Pro
Royalty Builders, Inc.
228 Hamilton Ave 3rd Floor
5.00(
14
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

Royalty Builders Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests and make their concerns the basis of our business. Please give us a call today 855-744-4424

"Bathroom remodeling Panel upgrade I want to tank royalty builders for the new bathroom the design and the crew was great we are happy with out new bathroom"

Vilma T on June 2024

Royalty Builders Inc is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests and make their concerns the basis of our business. Please give us a call today 855-744-4424

"Bathroom remodeling Panel upgrade I want to tank royalty builders for the new bathroom the design and the crew was great we are happy with out new bathroom"

Vilma T on June 2024


Universal Construction Company
161 Martin Place
4.71(
7
)
Approved Pro
Universal Construction Company
161 Martin Place
4.71(
7
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
45 years of experience

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of general contractor and home improvement services that are customizable to each individual project. We specialize in additions and bathroom remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships, and guarantee your satisfaction!

"He is very good, communicates well, and he is there when he says he will be and very thorough! I liked doing business with him! He explains everything that he will do before he does the job and he listens to my suggestions."

Marilyn B on June 2019

We are a locally owned and operated company that values honesty and integrity, and treats your home as if it were our own. We offer a variety of general contractor and home improvement services that are customizable to each individual project. We specialize in additions and bathroom remodels, but also offer a wide range of expertise for a variety of other projects. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships, and guarantee your satisfaction!

"He is very good, communicates well, and he is there when he says he will be and very thorough! I liked doing business with him! He explains everything that he will do before he does the job and he listens to my suggestions."

Marilyn B on June 2019


Avatar for Masterful Construction, Inc.
Masterful Construction, Inc.
3 East Third Avenue, #340
5.00(
22
)
Approved Pro
Masterful Construction, Inc.
3 East Third Avenue, #340
5.00(
22
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

MASTERFUL CONSTRUCTION INC is the leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"Masterful Constructions architectural and engineering expertise is unparalleled. Their attention to detail and commitment to delivering projects on time and within budget is truly impressive. Every aspect of our project was flawlessly executed."

Ben E on August 2023

MASTERFUL CONSTRUCTION INC is the leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

"Masterful Constructions architectural and engineering expertise is unparalleled. Their attention to detail and commitment to delivering projects on time and within budget is truly impressive. Every aspect of our project was flawlessly executed."

Ben E on August 2023


RSB Construction Group Inc.
58 W Portal Ave, Unit 150
New on HomeAdvisorNew on Angi
Approved Pro
RSB Construction Group Inc.
58 W Portal Ave, Unit 150
New on AngiNew on HomeAdvisor
Approved Pro
4 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!


Avatar for Kasas Builders, Inc.
Kasas Builders, Inc.
1976 Powell St Unit # 4
5.00(
5
)
Approved Pro
Kasas Builders, Inc.
1976 Powell St Unit # 4
5.00(
5
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
7 years of experience

Kasas Builders has 6 years in the construction industry. We love working with homeowners and seeing the beautiful finished products that our teams create. We take pride in our work and always strive for perfection. Call Kasas Builders to schedule your free estimate today!

"Hassle free experience."

Sudanshu B on August 2019

Kasas Builders has 6 years in the construction industry. We love working with homeowners and seeing the beautiful finished products that our teams create. We take pride in our work and always strive for perfection. Call Kasas Builders to schedule your free estimate today!

"Hassle free experience."

Sudanshu B on August 2019


Ashbury General Contracting and Engineering
40 12th Street
4.50(
2
)
Approved Pro
Ashbury General Contracting and Engineering
40 12th Street
4.50(
2
)
Approved Pro
Customers say: Terrific value
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
35 years of experience

Mon-Fri 7a-5pm Fully integrated company. All work is done in-house by employees not sub-contractors. We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forwards to earning your business! Book with us online or feel free to give us a call today!

"Great work for a great price."

Paul H on March 2023

Mon-Fri 7a-5pm Fully integrated company. All work is done in-house by employees not sub-contractors. We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forwards to earning your business! Book with us online or feel free to give us a call today!

"Great work for a great price."

Paul H on March 2023


Avatar for RIVERA'S HOME REMODELING
RIVERA'S HOME REMODELING
27654 Seminole Way
5.00(
2
)
Approved Pro
RIVERA'S HOME REMODELING
27654 Seminole Way
5.00(
2
)
Approved Pro
1 years of experience
Free onsite estimate

RIVERA'S HOME REMODELING is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I cannot recall Ruben enough… he was incredible to work with. Not only is he talented, professional, knowledgeable and responsive but a very kind person. I highly recommend!"

Carolyn D on February 2025

RIVERA'S HOME REMODELING is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"I cannot recall Ruben enough… he was incredible to work with. Not only is he talented, professional, knowledgeable and responsive but a very kind person. I highly recommend!"

Carolyn D on February 2025


Avatar for Level 8 Construction Inc.
Level 8 Construction Inc.
337 12th Ave
5.00(
1
)
Approved Pro
Level 8 Construction Inc.
337 12th Ave
5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
20 years of experience

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"I found this company to be very responsive and fair, they were extremely easy to work with, I wold highly recommend them to anybody."

Pete S on August 2020

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!

"I found this company to be very responsive and fair, they were extremely easy to work with, I wold highly recommend them to anybody."

Pete S on August 2020


Avatar for ICON Home Builders, Inc.
ICON Home Builders, Inc.
2375 Zanker Rd, Suite 225
5.00(
2
)
Approved Pro
ICON Home Builders, Inc.
2375 Zanker Rd, Suite 225
5.00(
2
)
Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

ICON Home Builders is a full-service general contractor specializing in high-quality home remodels, renovations, and custom builds in the San Francisco Bay Area. We transform homes with custom kitchens, luxurious bathrooms, full renovations, and home additions, combining expert craftsmanship and personalized design. Known for our attention to detail, clear communication, and efficient project management, we ensure your home reflects your vision. We serve Santa Clara, San Mateo, Alameda, and Contra Costa counties, and are EPA Lead-Safe Certified and CSLB Licensed (#1102095). Whether you're looking for a complete home transformation or a specific remodel, ICON Home Builders delivers on time and within budget, ensuring the highest standards in every project.

"Danny's expertise shone through from our very first meeting, where he presented an impressive initial design that immediately instilled confidence in the project's outcome. His meticulous planning and efficient execution made the process nearly effortless for me. Throughout the project, Danny demonstrated exceptional professionalism: He patiently addressed all my questions, ensuring I felt informed and comfortable with each decision. He took charge of the shopping process, offering valuable professional advice on material selections. When the initially chosen tile color didn't translate well from the store to my home, Danny proactively brought a sample for us to evaluate in situ. This attention to detail allowed us to pivot and select a more suitable option that enhanced the overall aesthetic. The final result exceeded my expectations, with Danny's design acumen particularly evident in the enlarged shower space. His thoughtful approach to space utilization has significantly improved the functionality and appeal of the room. Danny's combination of design talent, project management skills, and client-focused service resulted in a fantastic outcome that I'm thrilled with"

Yu Z on September 2024

ICON Home Builders is a full-service general contractor specializing in high-quality home remodels, renovations, and custom builds in the San Francisco Bay Area. We transform homes with custom kitchens, luxurious bathrooms, full renovations, and home additions, combining expert craftsmanship and personalized design. Known for our attention to detail, clear communication, and efficient project management, we ensure your home reflects your vision. We serve Santa Clara, San Mateo, Alameda, and Contra Costa counties, and are EPA Lead-Safe Certified and CSLB Licensed (#1102095). Whether you're looking for a complete home transformation or a specific remodel, ICON Home Builders delivers on time and within budget, ensuring the highest standards in every project.

"Danny's expertise shone through from our very first meeting, where he presented an impressive initial design that immediately instilled confidence in the project's outcome. His meticulous planning and efficient execution made the process nearly effortless for me. Throughout the project, Danny demonstrated exceptional professionalism: He patiently addressed all my questions, ensuring I felt informed and comfortable with each decision. He took charge of the shopping process, offering valuable professional advice on material selections. When the initially chosen tile color didn't translate well from the store to my home, Danny proactively brought a sample for us to evaluate in situ. This attention to detail allowed us to pivot and select a more suitable option that enhanced the overall aesthetic. The final result exceeded my expectations, with Danny's design acumen particularly evident in the enlarged shower space. His thoughtful approach to space utilization has significantly improved the functionality and appeal of the room. Danny's combination of design talent, project management skills, and client-focused service resulted in a fantastic outcome that I'm thrilled with"

Yu Z on September 2024

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Addition to existing structure building services FAQs

Building an in-law suite takes between two and seven months. Converting an existing basement, attic, or room can be done in about two months. Constructing a new addition or detached suite often takes four to five months for construction, plus one to two months for permits. The bigger the suite, the longer it will take. 

Yes, you can build an in-law suite in your backyard if you meet local building codes and zoning regulations. An in-law suite often occupies 300 to 800 square feet. Be sure to follow size restrictions, utility separations, and entrance requirements. Hiring a qualified contractor ensures you meet all regulatory requirements because they can pull permits, double-check local code, and gather other skilled pros to work on your suite. 

The homeowners guide to addition to existing structure building services
From average costs to expert advice, get all the answers you need to get your job done.
BRIGHT OPEN ATTIC SPACE
Apr 24, 2025
Apr 24, 2025
An in-law suite is a great solution for people who have family visiting often. Explore how much an in-law suite costs and prep to build yours.
A white wood ceiling
Apr 23, 2025
Apr 23, 2025
Looking to vault a ceiling? Here’s how much it costs, what factors affect cost, and what to expect.
Outdoor view of the modern house
Apr 22, 2025
Apr 22, 2025
Explore how square footage, room type, home additions, and other common factors affect house renovation costs with our detailed cost guide.
A rustic wooden cabin in the woods
Apr 21, 2025
Apr 21, 2025
Discover how much a log cabin costs to build, exploring how factors like its size, site prep, utilities, finishes, and labor rates affect the total price.
CONTRACTOR LOOKING OVER HOME DEVELOPMENT
Apr 19, 2025
Apr 19, 2025
Budget for your general contractor’s hourly rate by considering factors such as project scope, fee structure, pricing model, and more.
stucco home with cracks from earthquake damage
Apr 16, 2025
Apr 16, 2025
Work out the full cost to repair earthquake damage based on the type of damage, including foundation issues, utility lines, and cracked walls.
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